Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session A41: Applied Thin Film, Interface, and Surface Science
8:00 AM–10:48 AM,
Monday, March 15, 2021
Sponsoring
Unit:
DCMP
Chair: Daniel Dougherty, North Carolina State University
Abstract: A41.00006 : Surface-Enhanced Nonreciprocal Response in Iron Garnets*
9:00 AM–9:12 AM
Live
Presenter:
Sushree Dash
(Michigan Technological University)
Authors:
Sushree Dash
(Michigan Technological University)
Miguel Levy
(Michigan Technological University)
Daniel Haskel
(Argonne National Laboratory)
Pinaki Mukherjee
(Michigan Technological University)
Richard A Rosenberg
(Argonne National Laboratory)
applications. Recent studies in iron garnet media have revealed a 7-fold increase in
the Faraday rotation response within 2 nm of the surface1. We will present a surface-
reconstruction analysis of Bi-substituted magneto-optic films conducted via
scanning-transmission-electron microscopy (STEM). Differences found between the
bulk and surface atomic structures will be discussed2. Analysis of
electronic absorption and magnetic circular dichroism (XMCD) spectra in total
fluorescence yield (TFY) and total electron yield (TEY) for 2p to 3d transitions in Fe 3+
ions were performed and will be discussed.
1. M. Levy, O. V. Borovkova, C. Sheidler, B. Blasiola, D. Karki, F. Jomard, M. A.
Kozhaev, E. Popova, N. Keller, V. I. Belotelov, “Faraday rotation in iron garnet films
beyond elemental substitutions,” Optica 6 (5), 642-645 (2019).
2. S.S. Dash, P. Mukherjee, D. Haskel, R.A. Rosenberg, M. Levy, “Boosting optical
nonreciprocity: Surface reconstruction in iron garnets,” Optica 7 (9), 1038-1044 (2020).
*
Advanced Photon Source, a U.S. Department of Energy by Argonne National Laboratory under Contract No. DE-AC02-06CH11357.
Air Force Research Laboratory (FA8650-17-C-5072); U.S. Department of Energy (DE-AC02-06CH11357)
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